<html>
<body>
Catalog -> Product
<form method="post">

    Ma san pham : <input type="text" name="masp"/>  <br/>
    Ten san pham : <input type="text" name="tensp"/>  <br/>
    Gia goc : <input type="text" name="giagoc"/>  <br/>
    Gia ban : <input type="text" name="giaban"/>  <br/>
    Thuoc catalog : <input type="text" name="catalog"/>  <br/>
    <input type="submit" name="gui"  value="submit"/>
</form>
</body>

</html>